samur araujo created JENA-1277:
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Summary: Spatial Queries Very Slow For Large Databases
Key: JENA-1277
URL: https://issues.apache.org/jira/browse/JENA-1277
Project: Apache Jena
Issue Type: Improvement
Components: Spatial
Affects Versions: Jena 3.1.1
Environment: Linux Ubuntu
Reporter: samur araujo
I loaded geonames on Jena but the spatial queries take more than 3s to execute.
The query is below:
PREFIX spatial: <http://jena.apache.org/spatial#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT distinct ?place
{
?place spatial:intersectBox (32.55668 -117.12865 32.56668 -117.13865) .
}
The data can be downloaded here:
https://drive.google.com/file/d/0B-fwYPJYT1GOYVVIZF9ROUxzclk/view?usp=sharing
For small datasets the queries are executed in 200ms, very fast. I noticed that
when I access the lucene index directly the queries are also very fast, about
20ms.
The issue may be related to the pos-processing of lucene results.
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